Techy & Warm Fleece.

Black Diamond’s CoEfficient Jacket is a lightweight, do-it-all men’s mid layer and outer sweater, built for missions that range from spring ski tours to early autumn day hikes. It’s made from warm and durable Polartec Power Dry High-Efficiency fleece, which features primarily bluesign approved fabric. Black Diamond gridded this fleece jacket’s interior to enhance its sweat-wicking performance and improve breathability. The full-length zipper allows for fast temperature regulation when on the move, and lightweight stretch cuffs with integrated thumbloops allow for efficient layering.